Earlier quoted context omitted.
Everyone I know (personally or otherwise) who is an actual leftist is very vocally unhappy with the bombing of Syria, the lack of stimulus checks, ICE's policies, and Biden generally. He's most certainly not a leftist hero/idol.
A beautiful not-true-Scotman in the wild. AOC -> Silent Bernie -> Silent Krugman -> Silent Reich -> Silent Faang Employees -> Silent Ilham Omar -> To her credit, she spoke out. If by "actual leftist" you mean people like Rania Khalek, I would agree, but unfortunately people like her are a tiny minority and constantly belittled, ignored or called tankies or something along those lines. The mainstream left is dominated…
Bernie Sanders: https://twitter.com/SenSanders/status/1365361968513744897
Ilhan Omar: https://twitter.com/IlhanMN/status/1365150215708299271?s=20
This took 10 seconds to find. You can make an argument that they could be louder (and I'd definitely agree with you on that), but you can't in good faith make an argument that they're "silent". As for Krugman and Reich, I don't see how they're any relevant.
AOC is so vocal about abolishing ICE that I don't feel the need to even back that up.